G GE Power Management MMII Intelligent MCC Controller.

gGE Power Management

MMII Intelligent MCC ControllerMMII Intelligent MCC Controller

g GE Power Management MMII Intelligent MCC Controller

A concept that will offer reduced overall installed cost and production efficiency through information availability to operators and maintenance.


Presentation Presentation OverviewOverview

ApplicationsApplications

Protection and Protection and ControlControl

Metering andMetering and MonitoringMonitoring

InputInputss

User InterfaceUser Interface

OrderingOrdering

CommunicationsCommunications

Typical WiringTypical Wiring

ApplicationsApplications

g GE Power Management

Low voltage motor control centers

Integrated process and electrical control

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MMII Intelligent MCC Controller

In one package the Motor Manager II (MMII) combines control functions and comprehensive motor protection, providing sophisticated control and protective relaying.

g GE Power Management Application

52

51 49 37 46

51G

49

59 27

CONTACTOR A(FORWARD/WYE)

CONTACTOR B(REVERSE/DELTA)

AUX 1RELAY

AUX 2RELAY

PROCESSPLC OR

TRANSDUCER

CONTROLINPUTS

4 - 20mAINPUT

MOTORMANAGER II

480 VOLTS BUS

FUSE

CONTACTOR

PHASE PT

PHASE CT

GROUND CT

WINDING

THERMISTOR

THERMISTOR

MOTOR

RS485 REMOTECOMMUNICATION

1200-19K2 BAUD

LOAD

SINGLE LINE DIAGRAMSINGLE LINE DIAGRAM

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Legend

g GE Power Management

STANDARDPROTECTION

OPTION 2ENHANCEMENT

49/51 overload46 phase unbalance

(single phase) welded/open contactor

50G/51G ground fault48 locked rotor/stalled rotor49 hot winding (thermistor)37 undercurrent/under power 27 undervoltage59 overvoltage

DEVICE PROTECTION

Application

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ProtectionProtection


Overload Phase unbalance Contactor failure Locked/stalled rotor Ground fault Hot winding thermistor Undercurrent/underpower

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g GE Power Management Protection

4 NEMA compatibletime/current overload

curves

MULTIPLE OF PICKUP CURRENT (PER UNIT)1005020109876543210.1 0.5

1

10

100

1000

10000

100000

TIM

E I

N S

EC

ON

DS

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CURVE #CLASS 30CLASS 20CLASS 15CLASS 10

ControlControl


Undervoltage auto restart Outputs (assignable to any one of 31 functions)

2 contactor (A and B) 2 programmable

Inputs: 6 fixed, 10 programmable 1 analog input

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InputsInputs

Switched InputsSwitched Inputs up to 6 fixed control inputs used for start A and B, stop, local isolator, and contactor A and B status.

Switched InputsSwitched Inputs scaleable to user defined values high and low alarm and trip setpoints recorded with time delays

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MeteringMetering

The MMII meters and displays:The MMII meters and displays:

RMS current of each phase ground fault leakage current motor load as a % of full load current thermal capacity used (%) according to I2t history and chosen overload curve; hot/cold ratio is used to model heating when running below full motor current

% unbalance power (kW) energy (kWh) voltage analog input

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MonitoringMonitoring

Trip RecordTrip Record when a trip command is issued, a trip record is generated, including the cause of trip and pre-trip actual values

Statistics and MaintenanceStatistics and Maintenance user enabled to set the interval at which a number of routine maintenance tasks should be performed. When these times are exceeded an alarm is generated, including:

motor greasing interval contactor inspection maximum motor stopped time

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RS485 ModBus®, 1200 - 19,200 bps Display model for local interface Up to 11 status LEDs MMII PC Software



The Chassis Mount ModelThe Chassis Mount Model

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mounted inside the motor control center (MCC) comes with all standard features setpoints are loaded through the RS485 communications port from a personal computer running the MMII program.

g GE Power Management User Interface

Windows based Windows based softwaresoftware Windows 95 or Windows

NT Features:

program or modify setpoints

load or save setpoints from or to a disk

read actual values from the MMII

monitor status

MMIIPC SoftwareMMIIPC Software

read pre-trip data and trip record

display dynamic trending of actual values

get help on any topic print the instruction

manual from disk MAINMAIN

GE Power Managementg Front View

DISPLAY:DISPLAY:2 line, 40 character illuminated displaycommunicates all messages in simpleEnglish for easy interpretation by usersunfamiliar with unit

RELAY INDICATORS:RELAY INDICATORS:RELAY A: Contactor A energizedRELAY B: Contactor B energizedAUX 1: User programmable relay 1 energizedAUX 2: User programmable relay 2 energized

PROGRAM KEYS:PROGRAM KEYS:ACTUAL VALUES: Press to enter actual values mode to display actual motor values such ascurrent, ground leakage, thermal capacity.SETPOINTS: Press to enter setpoint mode to alter or examine setpoints.STORE: Save a newly entered setpoint.RESET: Reset the MMII after a trip.MESSAGE: Move to the desired setpoint or actual value message.VALUE: Increment or decrement currently displayed setpoint value. MAINMAIN

GE Power ManagementgCONTROL KEYS:CONTROL KEYS:AUTO: Selectsoperation of start viacommunication port.MANUAL: Selectsmanual operation ofmotor using start key.START A: Energizecontactor A.START B: Energizecontactor B.STOP: De-energize contactors.

STATUS INDICATORS:STATUS INDICATORS:RUNNING: Contactor is energized and motor is running.STOPPED: Contactor is not energized and motor is not running.TRIPPED: Contactor is not energized. Motor is not running. The MMII has tripped the motor due to a fault. Normally a cause of trip message will be displayed.ALARM: One or more alarm conditions are present. Normally a cause of alarm message will be displayed.FAULT: An internal fault or abnormal condition has been detected. The MMII may need to be replaced or serviced.

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Front View

GE Power Managementg Rear View

SUPPLY VOLTAGESUPPLY VOLTAGErequired to power theMMII

SWITCH INPUTSSWITCH INPUTSOpto-isolated 120 VAC live inputs for various interlock functions. The interlock inputs are fully programmable and can be assigned to such functions as setpoint access, plant interlock, test, and various others.

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4 RELAYS4 RELAYS Contactor A: direct on line / forward / wye Contactor B: reverse / delta User programmable relay (AUX 1) User Programmable relay (AUX 2)

COMMUNICATIONSCOMMUNICATIONSRS485 2 wire serial communication port operates at 1200 - 19,200 bps for remote commands, monitoring and setpoint store. ModBus® RTU protocol.

CONTROL POWERCONTROL POWER120/240 VAC supplyvoltage selector switchand fuse access door

Ground safety and surge

VOLTAGE INPUTVOLTAGE INPUTPhase A voltage input forvoltage and powermonitoring.

PHASE CT INPUTSPHASE CT INPUTS3 isolated phase CTinputs that accept1 amp or 5 amp CT.

ANALOG INPUTANALOG INPUT4 - 20mA input for processcontrol monitoring / alarming /tripping.

THERMISTORTHERMISTORNTC or PTC thermistor inputfor hot winding detection.

GROUND CT INPUTGROUND CT INPUT5 amp or 50:0.025 ground faultinput for residually connectedphase CTs or separate core balance (zero sequence) CT.

GE Power Managementg

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Rear View


CommunicationCommunication

ModBus® RTU RS485 connection Up to 32 MMIIs can be daisy chained together on a single communication channel. supports operation at 1200 to 19,200 bps

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Typical WiringTypical Wiring

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Residual Ground Connection Two Phase CT Connection Direct ConnectionCT

PHASE ACT

PHASE BCT

PHASE C

CTPHASE A

CTPHASE C

PART 2 OF DIAGRAM

Core Balance (Zero Sequence)

4-20mAAnalog Input

RS485

StatorThermistor

Stop

Start

CTPhase A

CTPhase B

CTPhase C

CTGround

L1L2L3

L1L2L3

MOTOR

Fix

ed S

wit

ch I

npu

tsP

rogr

amm

able

Sw

itch

In

pu

ts

MCC Ground BusL

N

A

AC Control Voltage120 / 240 VAC

IsolaterSwitch Contactor

Con

tact

or A

MOTOR MANAGER II

Option 1: Process control

Option 2: Enhanced protection

=

=

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GE Power Managementg

OrderinOrderingg

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MMII Intelligent MCC Controller

MMII Basic Unit PD Panel Mount With Display * C Chassis Mount (Black Box)

1 Option 1 Process control, process input, undervoltage auto

restart, diagnostics 2 Option 2 Enhanced protection, power (kW),

thermistor, 2nd contactor control

120 Control voltage 120 VAC 240 Control voltage 240 VAC

GE Power Managementg Ordering

Accessories:Accessories:MMIIPC software package supplied freeRS232 TO RS485 CONVERTER box designed for harsh industrial environments5A PHASE CT: 50, 75, 100, 150, 200, 250, 300, 350, 400, 500, 600, 750, 10001A PHASE CT: 50, 75, 100, 150, 200, 250, 300, 350, 400, 500, 600, 750, 100050:0.025 GROUND CT for sensitive ground detection on high resistance grounded systemsCOLLAR for reduced depth mounting

Modifications:Modifications:MOD601: 240 VAC switch inputs - allows the use of external 240 VAC supply to power

switch inputs MOD602: 24 - 48 VDC switch inputs - allows the use of external 24 - 48 VDC supply to

power switch inputsMOD603: ESD relay - converts AUX 2 relay into an emergency shutdown relayMOD605: Removable rear terminals - allows terminals 13 - 58 to be unplugged from the

MMIIMOD610: Conformal coatingMOD613: 240 VAC VT inputMOD616: MMII with remote display

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gGE Power Management

MMII Intelligent MCC ControllerMMII Intelligent MCC Controller

G GE Power Management MMII Intelligent MCC Controller.

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